Abstract: Liquid electrophotography apparatus including a plurality of members defining a flow path for a printing liquid. At least a first member of the plurality of members is arranged to generate an electric field. The liquid electrophotography apparatus also includes a first insulation layer arranged around at least a portion of a surface of the first member to prevent electrical discharge from the printing liquid.

Abstract: A process cartridge detachably mountable to an electrophotographic image forming apparatus including a main assembly side drive transmission member and a main assembly side urging member, the cartridge including a rotatable photosensitive drum; a rotatable developing roller for developing a latent image formed on the drum, the developing roller contactable to and spaceable from the drum; an urging force receiving portion for receiving an urging force from the urging member to space the roller from the drum; a cartridge side drive transmission portion capable of coupling with the main assembly side drive transmission member to receive a rotational force for rotating the roller; a releasing member capable of urging the main assembly side drive transmission member to decouple the cartridge side drive transmission member from the main assembly side drive transmission member by the urging force receiving portion receiving the urging force from the main assembly side urging member.

Abstract: A developing cartridge may include: a casing configured to accommodate developer therein, the casing extending in the first direction; a coupling rotatable about a first axis extending in the first direction, the coupling being positioned at one side of the casing in the first direction; a detection gear rotatable about a second axis extending in the first direction, the detection gear being positioned at another side of the casing in the first direction; and a storage medium including an electric contact surface, the electric contact surface being positioned at the one side of the casing in the first direction.

Abstract: A power control apparatus that supplies an AC current to a load and adjusts a current amount by setting a portion of a phase range among each of half-wave periods of the AC current to be supplied as a conduction angle and setting the remainder as a non-conduction angle, includes: a reference value determiner that defines a period across a plurality of half-wave periods as a current determination period and that determines a reference value of the conduction angle; and a distribution processor that determines a distribution value to distribute the conduction angle and performs current amount adjustment by distributed conduction angles, wherein the distribution processor determines the distribution value within one current determination period such that the value includes a positive distribution value and a negative distribution value, and an average value of the distributed conduction angles is within ±2.5% with respect to the reference value.

Abstract: A transport member, that transports a developer by rotating in a rotation direction that is predetermined around a rotation axis, includes: a shaft part including the rotation axis; and a blade part spirally provided on an outer peripheral surface of the shaft part, wherein the blade part includes a transport surface that is a surface facing a downstream side in a transport direction of the developer along the rotation axis, and a non-transport surface that is a surface other than the transport surface, and the transport member further includes a fin protruding from the non-transport surface of the blade part, the fin being provided with an interval from the outer peripheral surface of the shaft part.

Abstract: Disclosed is a xerographic printing apparatus and print cartridge including a deformable electrically conductive ring. According to an exemplary embodiment, a xerographic image rendering print cartridge includes a drive shaft, a photoreceptor drum and a deformable electrically conductive ring operatively associated with electrically connecting an inside surface of the photoreceptor drum to the drive shaft to provide a grounding electrical path.

Abstract: A transfer unit includes a transfer roller, a guide, a holder and a lever. The transfer roller is configured to be pressed against an image carrier to form a transferring nip and to transfer a toner image from the image carrier to a sheet at the transferring nip. The guide is configured to guide the sheet to the transferring nip. The holder is configured to support a rotating shaft of the transfer roller in a rotatable manner and to support the guide. The lever is configured to support the holder in a turnable manner around the rotating shaft so as to press the transfer roller against the image carrier. The guide has an engaged part. The lever has an engagement part which is engaged with the engaged part. An engagement of the engagement part with the engaged part prevents a turning of the guide with respect to the lever.

Abstract: A solid lubricant to be applied onto an image carrier of an image forming apparatus of an electrophotographic system, includes a metal soap and resin particles, and the resin particles have a particle main body constituted by a rigid resin other than fluorine-based resins, and fluorine atoms carried on the surface of the particle main body.

Abstract: A printing system includes a printing control apparatus and a printing apparatus. The printing apparatus includes a receiving unit that receives data transmitted from the printing control apparatus, and a power source control unit that causes the printing apparatus to enter a first power saving state or a second power saving state. The printing control apparatus includes an acquisition unit that acquires a power state of the printing apparatus, and a control unit that causes the printing control apparatus to enter an OFF state in a case where a acquired power state is the first power saving state, and causes the printing control apparatus to enter a power saving state where a wake-up packet for recovering the printing apparatus from the second power saving state can be transmitted in a case where the acquired power state is the second power saving state.

Abstract: An image forming apparatus comprises a transfer section, a fixing section, and a controller. The transfer section includes a transfer rotating body for conveying a sheet at a first linear velocity, and transfers a toner image onto the sheet. The fixing section forms a nip sandwiching the sheet with a first rotating body and a second rotating body, and a heating section for heating the sheet onto which the toner image is transferred. The controller executes a sheet acceleration and deceleration control for setting a linear velocity of the first rotating body to a second linear velocity from the first linear velocity before the tip of the sheet reaches the nip, and decelerating the linear velocity of the first rotating body from the second linear velocity to the first linear velocity at the time the tip of the sheet reaches a predetermined range in a sheet conveyance path.

Abstract: A developing cartridge may include: a casing to accommodate developer; a storage medium including an electric contact surface; an elastic member extending in a first direction crossing the electric contact surface, and configured to be compressed or stretched in the first direction between a first state and a second state; and a holder including an outer surface positioned toward a side of the holder in the first direction, the electric contact surface positioned at the outer surface, and movable between first and second positions in the first direction relative to the casing. A length of the elastic member in the first direction is greater in the first state than in the second state. The electric contact surface is in the first position when the elastic member is in the first state, and the electric contact surface is in the second position when the elastic member is in the second state.

Abstract: According to embodiments, an image forming apparatus includes a fixation member, a pressurization member, a heat source, a drive unit, a measurement unit, and a control unit. The measurement unit measures the time that elapses after the image forming apparatus ends image forming processing until the image forming apparatus receives an instruction to perform the next image forming processing. If the elapsed time does not exceed a predetermined threshold, the control unit causes the drive unit to start to drive the fixation member after a temperature of the fixation member reaches a first control temperature. If the elapsed time exceeds the predetermined threshold, the control unit causes the drive unit to start to drive the fixation member after the temperature of the fixation member reaches a second control temperature that is higher than the first control temperature.

Abstract: A developing cartridge includes: a casing, a developing roller, a storage medium having an electrical contact surface, a holder, and a holder cover configured to cover the holder. The holder has: a first outer surface holding the electrical contact surface, a second outer surface spaced away from the first outer surface in a third direction, and a resilient member connected to the first outer surface and to the second outer surface. The resilient member is configured to expand and contract to change a distance between the first outer surface and the second outer surface. The resilient member has a first length in the third direction in a state where the holder cover is detached from the holder. The resilient member has a second length in the third direction smaller than the first length in a state where the holder cover is attached to the holder.

Abstract: A transport monitoring control device includes a pair of rollers configured to transport a recording medium while nipping the recording medium therebetween, the pair of rollers having circumferential surfaces coming in contact with the recording medium, the circumferential surfaces being different from each other in hardness, a driving unit configured to drive the pair of rollers, a detector configured to detect waveforms related to a load of the driving unit, an extractor configured to extract a peak waveform having an extreme point temporarily exceeding a predetermined threshold value, from among the waveforms detected by the detector, and a determining unit configured to determine whether multi-feed of the recording medium is present, based on the number of peak waveforms extracted by the extractor.

Abstract: An image forming apparatus comprises a first sensor configured to measure a first temperature indicating a surface temperature of an endless belt for fixing a developing agent adhering to a sheet; a second sensor configured to measure a second temperature indicating a surface temperature of an end part of the endless belt; an atmosphere temperature measurement sensor configured to measure an atmosphere temperature indicating a temperature around the image forming apparatus; a threshold value temperature determination section configured to determine, based on the atmosphere temperature and the first temperature, an abutting condition as a condition under which a heat conduction member for executing temperature equalization of the surface temperature of the endless belt abuts against the endless belt; and a heat conduction member control section configured to enable the heat conduction member to abut against the endless belt if the second temperature meets the abutting condition.

Abstract: In an image forming apparatus, a cleaning portion has a discharge pipe that guides toner that has been collected from a peripheral surface of a photoreceptor drum as waste toner to the outside of a process unit. The discharge pipe is drawn from a side surface of the process unit and includes at a tip portion a discharge port that discharges the waste toner. A restricting portion is arranged on a side surface of the discharge pipe, between a position corresponding to an insertion port and the discharge port, and restricts a flow of air moving from the discharge port to the insertion port. The insertion port is provided on a same surface as the side surface of the process unit from which the discharge pipe is drawn. And the insertion port is configured to be inserted by a cleaning tool for the electrode.

Abstract: An image forming apparatus is operable in a first mode in which a control unit is in a rest state and a second mode in which electric power is supplied to the control unit. The image forming apparatus changes the mode of the operation to the second mode of an operation in response to change of detection of a detecting portion from presence of the sheet on a manual feeding tray to absence thereof during execution of the operation in the first mode with a pressing mechanism being in the second position, and then in response to receipt of input of a predetermined instruction about an image forming operation by a receiving portion in the second mode, the control unit controls the moving mechanism so that the pressing mechanism moves from the low pressure position to a nip-forming position.

Abstract: An electrophotographic roller includes an electro-conductive shaft core including a metallic layer at its surface, and an elastic layer on the shaft core. When kinetic friction coefficients of an outer peripheral surface of each end portion of the shaft core with respect to polyester resin are measured for one rotation of the shaft core, an average value ?r of the kinetic friction coefficients is 0.05 to 0.50. When each outer peripheral surface is divided into three equal ranges, defined as a region A1, a region A2, and a region A3, in a peripheral direction of the shaft core, each of the regions has a location where the kinetic friction coefficients fall within a range of 1.5 ?r to 1.8 ?r, and a location where the kinetic friction coefficients fall within a range of 0.2 ?r to 0.5 ?r.

Abstract: Provided is an image forming apparatus, including a photosensitive member, a latent image forming unit configured to form an electrostatic latent image on the photosensitive member, a developing unit configured to store developer containing toner and to develop the electrostatic latent image on the photosensitive member using the developer, a detector configured to detect an amount of the toner stored in the developing unit, and a supplying unit configured to supply toner to the developing unit.

Abstract: A drive transmitter includes a group of gears to which grease is applied, at least one gear of the group of gears being an internally toothed gear, multiple pulleys, and a drive belt wound around the multiple pulleys to drive the group of gears. An image forming apparatus includes the drive transmitter.